macnaeey



(No Model.) MACNAREY. 2 Sheets-Sheet 1.

CYLINDER 0R DRUM FOR PAPER MAKING. No. 455,222. Patented June-30, 1891 Witnesses 2 Imfefiior M M 5 7 4 g.

(No Model.) J MAONAREY 2 Sheets-Sheet 2.

CYLINDER OR DRUM P011 PAPER MAKING. No. 455,222. Patented June30, 1891..

UNITED A STATES PATENT OFFICE.

JOHN MACNAREY, OF BURY, ENGLAND, ASSIGNOR TO GEORGE BENTLEY AND JOHN BROAD JACKSON, OF SAME PLACE.

CYLINDER OR DRUM FOR PAPER-MAKING.

SPECIFICATION forming part of Letters Patent No. 455,222, dated June 30, 1891. Application filed November 13, 1890. Serial No. 371,283. (No model.) Patented in England February 10, 1887, No. 2,133.

To all whom it may concern:

Be it known that 1, JOHN MAONARE Y, worksmanager, a subject of the Queen of Great Britain and Ireland, residing at Lodge Bank Works, Bury, in the countyof Lancaster, England, have invented certain Improvements in the Construction of Cylinders or Drums for Paper-Making and other Machines, (for which I have obtained a patent in Great Britain, No. 2,133, dated February 10, 1887,) of which the following is a specification.

This invention relates to the construction of cylinders or drums by means such as are described in the specification of English Letters Patent No. 1,346, dated May 3, 1872, granted to Daniel Bentley and John Broad Jackson.

My present invention has for its object to obviate the defect incidental to the construction as described and illustrated by the specification of the said Letters Patent, consisting in the distortion of the cylinder or drum by the drawing inward of the periphery of the said cylinder or drum at portions a little from the ends, due to the pressure put on the bolts or fastenings and owing to the space between the lugs A in the drawings accompanying the specification of the said Patent No. 1,346 of 1872, and the projections with the T- slots on the end disk.

In the accompanying drawings, Figure 1 represents an end view of a cylinder or drum, one half being shown with the end plate or disk in place and the other half being shown without the end plate or disk. Fig. 2 is a side view partly in longitudinal section. Fig. 3 is a section showing the inside of one of the end plates or disks, and Figs. at and 5 are enlarged sectional details illustrating the present invention.

According to my present improvements I form a flange A around the inner circumference of the cylinder B, near the end thereof, and a flange D on the head C, so that when the head C is placed in position the two flanges A and D abut firmly against each other, making a joint entirely around the cylinder. In these flanges A and D are formed slots a and (1, respectively, at convenient intervals and coinciding with each other for drum B.

the reception of the fastenings, such as the bolt a. Around each slot a on the flanges A are preferably cast projections ta which inclose or partly inclose the washers b and .the nuts used with the fastenings and keep the bolts a in place should the nuts become slack. When the head 0 is placed 1n position and the bolts a are screwed up or otherwise fastened, the bearing of the oints formed by the abutting of the meeting faces of the parts A and D prevent the hereinbefore-mentioned distortion of the cylinder or The joints are preferably turned on the meeting faces, and they may, 1n addition or in substitution, be cemented. Where the fastenings ct occur, the joint preferably extends from the inner periphery of the cylinder D continuously to the top of the flanges; Instead of there being deep recesses between the fastenings, a continuous flange or nearly continuous flange may be made to give an extended bearing on D. This is indicated at m 00, Fig. 1.

I claim as my invention- 1. A fastening for the ends or heads of a cylinder or drum, consisting of a flange on the inner periphery of the cylinder near 1ts end, and a flange on the head of the two said flanges abutting against each other all around the cylinder end, and coinciding slets 1n the flanges for the reception of fastenlngs, substantially as set forth.

2. A fastening for the ends or heads of a cylinder, consisting of a flange on the inner periphery of the cylinder near its end, an a flange on thehead, the two said flanges abutting against each other all around the cylinder end, coinciding slots in the flanges for the reception of the bolts, and projections a as and for the purposes set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN MACNAREY. Witnesses:

J AS. NUTTALL, 171 Park View, Wctlmersley Road, Bury.

D. H. WARD, 6 Park Hills Road, Bury. 

